Issue Summary

At least in the German e-mail notification of a postponed booking the E-Mail titles includes variables instead of localized text.
Maybe this is also the case for other localizations?
Shouldn't just english text be displayed default instead of variables in case of missing translations?

Steps to Reproduce

1. book a meeting
2. postpone meeting
3. check email

see screenshot:

Technical details

• G-Mail Web client

_CAL-790